On Wed, Mar 22, 2017 at 09:26:41AM +0100, Heiko Stuebner wrote:
> Am Montag, 20. März 2017, 16:53:44 CET schrieb Brian Norris:
> > We need to enable this regulator before the digitizer can be used. Wacom
> > recommended waiting for 100 ms before talking to the HID.
> >
> > Signed-off-by: Brian Norris <briannorris@xxxxxxxxxxxx>
> > ---
> > v3:
> > * reintroduced into patch set; bindings are in linux-next
> > ---
> > arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts | 3 +++
> > 1 file changed, 3 insertions(+)
> >
> > diff --git a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
> > b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts index
> > 2f720cf2fd07..f4714c4606f3 100644
> > --- a/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
> > +++ b/arch/arm64/boot/dts/rockchip/rk3399-gru-kevin.dts
> > @@ -232,6 +232,9 @@ ap_i2c_dig: &i2c2 {
>
> according to the hid-over-i2c binding, this should use a special compatible
> like
>
> compatible = "wacom,w9013", "hid-over-i2c"
>
> As the binding patch is from Caesar, I assume that is the Kevin component and
> I can add that myself, just need confirmation that this is actually the correct
> component :-) .
*Sigh.* The I2C (and SPI) framework is still broken w.r.t. multiple
compatible strings and drivers built as modules [1]. So I'd really
rather not do this...
...but yes, that's a fair component description.
Brian
[1] Some discussion about SPI:
https://patchwork.kernel.org/patch/7630571/
And the discussion about I2C (25% through that thread):
https://patchwork.kernel.org/patch/9455245/
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